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[image]BMNG Raw Topography - Reto Stockli, NASA Earth Observatory
These data represent the elevation of the Earth's land surface in meters, relative to sea level. Positive values are height above sea level, negative values below sea level. The data are formatted as a single-channel 16-bit integer (two byte, long) signed raw binary file, with big-endian byte order and no header. Dimensions are 86400 columns (width, x) by 43200 lines (height, y).The coordinates of the upper-left hand corner of the first pixel is 180 degrees West, 90 degrees North...
Downloads: 5,565
[image]Sunset on Mars: A Moment Frozen in Time - Image courtesy NASA/JPL/Texas A&M/Cornell
On May 19th, 2005, NASA’s Mars Exploration Rover Spirit captured this stunning view of the Sun sinking below the rim of Gusev crater on Mars. This Panoramic Camera (Pancam) mosaic was taken around 6:07 in the evening of the rover’s 489th Martian day, or sol. Spirit was commanded to stay awake briefly after sending that sol’s data to the Mars Odyssey orbiter just before sunset. This small panorama of the western sky was obtained using Pancam’s 750-nanometer, 530-nanometer and 430-nanomete...
Keywords: What -- Mars Exploration Rover (MER); What -- Spirit; What -- Sun; What -- Crater; What -- Mars; What -- Panoramic Camera; What -- Earth
Downloads: 1,108
[image]100,000 Earth Photographs from the International Space Station - Astronaut photograph was taken on January 26, 2004, using a Kodak digital camera with a 400 mm lens, and was provided by Julie Robinson, Earth Sciences and Image Analysis Laboratory (Lockheed Martin), Johnson Space Center. The supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC
This international image of the El Paso-Juárez area on the U.S.-Mexico border is the <strong>100,000th</strong> photograph of Earth that astronauts have taken from the International Space Station. It was taken on January 26, 2004, by Expedition 8 crewmembers.The Rio Grande can be seen meandering through the area, forming the boundary between the sister cities of El Paso, Texas and Juárez, Chihuahua...
Keywords: What -- International Space Station (ISS); What -- Sun; What -- Earth; Where -- Texas
Downloads: 1,019
[image]Severe Storm over the Red Sea - NASA images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC).
An Egyptian ferry carrying more than 1,300 people sank on February 2, 2006, in the northern Red Sea as strong storms swept across the region. While the exact cause of the disaster was not certain, the most likely reason was bad weather and high seas. At the time of the incident, a potent storm was advancing eastward over Egpyt and the western Mediterranean Sea. Out ahead of this advancing storm, strong southerly winds drew warm moist air up from the south...
Keywords: What -- Tropical Rainfall Measuring Mission (TRMM); What -- Imager; Where -- Red Sea; Where -- Mediterranean Sea; Where -- Egypt; Where -- Saudi Arabia
Downloads: 584
[movies]Massive Solar Flare - Images courtesy
A massive solar flare erupted from the surface of the Sun at 9:51 UTC on October 28, 2003. The solar flare persisted for more than an hour, peaking at 11:10 UTC. Associated with the flare was an ejection of a billion tons or more of gas from the Sun’s tenuous outer atmosphere, or corona. Both the flare and the coronal mass ejection accelerated electrically charged particles to very high energies and hurled them at near the speed of light directly toward the Earth...
Keywords: What -- Sun; What -- Earth; What -- SOHO; What -- Imager; What -- Extreme Ultraviolet Imaging Telescope; What -- Aurorae; Where -- Canada
Downloads: 468
[movies]Tornado Strikes Southern Maryland - Image courtesy (NOAA) and the Animation by Robert Simmon, NASA GSFC.
Evening light catches the tops of towering thunderheads over the Mid-Atlantic states on April 28, 2002. The powerful storms spawned several tornados, one of which was classified as an F4 tornado. The powerful tornado touched down in the southern Maryland town of La Plata, destroying most of the historic downtown. The twister—one of the strongest ever to hit the state—beat a 24-mile swath running west to east through the state and claimed at least three lives.The image above was taken by the ...
Keywords: What -- Environmental Satellite; Where -- Maryland
Downloads: 383
[movies]Revisiting the Dust Bowl - Image courtesy NASA
NASA scientists have an explanation for one of the worst climatic events in the history of the United States, the “Dust Bowl” drought, which devastated the Great Plains and all but dried up an already-depressed American economy in the 1930s.Siegfried Schubert of NASA’s Goddard Space Flight Center, Greenbelt, Md., and colleagues used a computer model developed with modern-era satellite data to look at the climate over the past 100 years...
Keywords: Where -- United States of America; Where -- Goddard Space Flight Center (GSFC); Where -- Pacific Ocean; Where -- Atlantic Ocean
Downloads: 366
[movies]Apollo 17 Anniversary - Animation courtesy by Marit Jentoft-Nilsen, NASA/GSFC Visualization and Analysis Lab
To mark the 30th anniversary of the Apollo 17 mission and the famous “Blue Marble” full Earth image, Goddard Space Flight Center’s Visualization and Analysis Lab has rendered a new visualization inspired by the mission.The 21 second visualization begins with the current Kennedy Space Center launch pads in the Cape Canveral area where the Apollo missions started and the Space Shuttle Missions start today...
Keywords: What -- Apollo 17; What -- Earth; What -- Space Shuttle Orbiter; What -- Moon; What -- Clementine; What -- Terra; What -- Aqua; What -- Landsat 7; Where -- Goddard Space Flight Center (GSFC); Where -- Kennedy Space Center (KSC); Where -- Florida; Where -- South Africa
Downloads: 364
[image]Mesopotamia - Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC
This pair of true- and false-color Moderate Resolution Imaging Spectroradiometer (MODIS) images from January 13, 2003, features the Mesopotamian Fertile Crescent in southern Iraq and Iran. The Fertile Crescent lies between the Euphrates and the Tigris Rivers. At the top of The Persian Gulf (bottom right), where Kuwait (west of the Gulf), Iraq, and Iran meet, the two rivers join before flowing into the Gulf.A number of fires were detected in this scene by MODIS and are marked in red...
Keywords: Where -- Iraq; Where -- Iran; Where -- Persian Gulf; Where -- Kuwait
Downloads: 355
[image]Greece - Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC
Silver and blue waters surround Greece in this true-color image acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite on August 19, 2004. This year, Athens is host to the 2004 Olympic Games, which first started in Greece over 2,800 years ago (in 776 BCE). Athens is the greyish spot roughly in the center of this image on the southern end of the Grecian mainland...
Keywords: Where -- Greece; Where -- Athens; Where -- Olympia
Downloads: 328
[movies]Salt Lake City Tornado - Animation by Robert Simmon and Craig Mayhew (NASA GSFC)
A rare tornado swept through Salt Lake City August 11, 1999, killing one person and injuring more than 70 others. Winds were in the 110–150 miles per hour range, and damaged several large buildings in the city's downtown.Images like these from the Geostationary Operational Environmental Satellites (GOES) help meteorologists track violent storms.
Keywords: What -- Environmental Satellite; Where -- Salt Lake City
Downloads: 293
[movies]Blue Marble: Animations - NASA Goddard Space Flight Center Image by Reto Stöckli (land surface, shallow water, clouds). Enhancements by Robert Simmon (ocean color, compositing, 3D globes, animation). Data and technical support: MODIS Land Group; MODIS Science Data Support Team; MODIS Atmosphere Group; MODIS Ocean Group Additional data: USGS EROS Data Center (topography); USGS Terrestrial Remote Sensing Flagstaff Field Center (Antarctica); Defense Meteorological Satellite Program (city lights).
This spectacular “blue marble” image is the most detailed true-color image of the entire Earth to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (.386 square mile) of our planet. These images are freely available to educators, scientists, museums, and the public...
Keywords: What -- Earth; What -- Polar; What -- Visible Light; What -- Defense Meteorological Satellite
Downloads: 254
[movies]Animation of Sequoia Forest Fire - Image and Animation by Robert Simmon and Marit-Jentoft Nilsen, NASA GSFC, based on data from NOAA.
Continued hot, dry weather in the American west contributed to the spread of numerous fires over the weekend of July 29–30, 2000. This is the most active fire season in the United States since 1988, when large portions of Yellowstone National Park burned.One of the largest fires currently burning has consumed more than 63,000 acres in Sequoia National Forest. This NOAA Geostationary Operational Environmental Satellite (GOES) image shows the fire on the afternoon of July 30, 2000...
Keywords: What -- Environmental Satellite; Where -- United States of America
Downloads: 250
[movies]Hurricane Bret - Data courtesy NOAA
Hurricane Bret, the first of the 1999 season, crashed into the Gulf Coast of Texas late in the evening of August 22nd. At its strongest a category 4 hurricane (with winds over 135 mph), it quickly weakened once it moved over land. The large amounts of rain the storm delivered?as much as 25 inches?caused flooding in South Texas.National Oceanic and Atmospheric Administration (NOAA) forecasters believe this might be the first serious hurricane of many, due to the lingering effects of La Ni¤a.
Keywords: Where -- Texas
Downloads: 224
[movies]NASA Launches Aqua Satellite - Images and animation courtesy Reto Stöckli, NASA Earth Observatory
<font size="-2" face="helvetica, arial, sans">large images Aqua Beauty Shot (244 KB JPEG) Aqua Orbiting the Earth (300 KB JPEG) Aqua’s Earth-facing Deck (216 KB JPEG) Delta II Rocket Lifting Off (44 KB JPEG) Delta II Rocket on Launch Pad (64 KB JPEG)</font>NASA’s latest Earth Observing System (EOS) satellite — Aqua — successfully launched Saturday morning, May 4, 2002. Aqua is dedicated to advancing scientific understanding of Earth’s water cycle and environment...
Keywords: What -- Earth; What -- EOS; What -- Aqua
Downloads: 195
[movies]Oklahoma Tornadoes - Image courtesy GOES project
Tornadoes in Oklahoma and Kansas on May 3, 1999, killed at least 40 people and caused over 500 million dollars in damages. One of the tornadoes was an F-5, the largest and most powerful classification. Although no direct measurement of windspeed is possible in such powerful storms, winds in an F-5 tornado are capable of topping 300 miles per hour.The GOES-East weather satellite produces images of most of the United States every 30 minutes in visible and infra-red wavelengths...
Keywords: What -- Earth; Where -- Oklahoma; Where -- Kansas; Where -- United States of America
Downloads: 190
[image]Egypt’s Great Pyramids of Giza - Astronaut photograph was taken August 18, 2003 with a Kodak DCS760 digital camera equipped with an 800mm lens and provided by Cynthia A. Evans (Lockheed Martin / Earth Observations Laboratory, Johnson Space Center). The supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC
high resolution 1000 pixel-wide image (650 kB JPEG)All astronauts are interested in observing unique human footprints from space, and especially those reflecting thousands of years of human activities. The region of the Great Pyramids of Giza—the last remaining wonder of the Seven Wonders of the Ancient World—is a favorite target. Although the pyramids have been imaged many times before by astronauts (for example: Space Station View of the Pyramids at Giza) , each new image provides a unique...
Keywords: What -- Sphinx; What -- Sun; Where -- Cairo; Where -- Egypt
Downloads: 183
[movies]Tornado Hits La Plata, Maryland - Image courtesy (NOAA) and the Animation by Robert Simmon, NASA GSFC.
Evening light catches the tops of towering thunderheads over the Mid-Atlantic states on April 28, 2002. The powerful storms spawned several tornados, one of which was classified as an F5 funnel cloud with winds in excess of 260 miles per hour. The powerful tornado touched down in the southern Maryland town of La Plata, destroying most of the historic downtown. The twister—one of the strongest ever to hit the state—beat a 24-mile swath running west to east through the state and claimed at lea...
Keywords: What -- Environmental Satellite; Where -- Maryland
Downloads: 178
[movies]Zoom into Mount Etna - Images by Stuart Snodgrass, NASA Goddard SVS; Landsat 7 data courtesy USGS Eros Data Center; MODIS data courtesy Jacques Descloitres, MODIS Land Rapid Response Team
On July 29, 2001, emergency workers in Sicily, Italy, were working round the clock to reinforce dams to contain the lava flows threatening the tourist base, called Rifugio Sapienza, at the foot of Mt. Etna. Another river of lava stopped just short (about 4 km) of the town of Nicolosi. Meanwhile, the air over southeastern Sicily is thick with ash and nearby residents of Catania, a town located downwind of the volcanic plume, have been forced to use umbrellas while walking outside...
Keywords: What -- Landsat 7; What -- Terra; What -- Earth; What -- EOS; What -- Enterprise; Where -- Italy; Where -- United States of America
Downloads: 178
[image]Space Radar Image of Central African Gorilla Habitat - NASA JPL
This is a false-color radar image of Central Africa, showing the Virunga Volcano chain along the borders of Rwanda, Zaire and Uganda. This area is home to the endangered mountain gorillas. This C- and L-band image was acquired on April 12, 1994, on orbit 58 of space shuttle Endeavour by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR). The area is centered at about 1.75 degrees south latitude and 29.5 degrees east longitude...
Keywords: What -- Space Shuttle Orbiter; What -- Endeavour; What -- Spaceborne Imaging Radar; Where -- Rwanda; Where -- Uganda; Where -- New Jersey; Where -- Jersey; Where -- London; Where -- Jet Propulsion Laboratory (JPL)
Downloads: 174
[movies]Tornado Hits La Plata, Maryland - Image courtesy (NOAA) and the Animation by Robert Simmon, NASA GSFC.
Evening light catches the tops of towering thunderheads over the Mid-Atlantic states on April 28, 2002. The powerful storms spawned several tornados, one of which was classified as an F4 tornado. The powerful tornado touched down in the southern Maryland town of La Plata, destroying most of the historic downtown. The twister?one of the strongest ever to hit the state?beat a 24-mile swath running west to east through the state and claimed at least three lives.The image above was taken by the Geos...
Keywords: What -- Environmental Satellite; Where -- Maryland
Downloads: 146
[movies]Salt Lake City, Utah Tornado - Robert Simmon, NASA Goddard DAAC
A rare tornado swept through Salt Lake City August 11, 1999, killing one person and injuring more than 70 others. Winds were in the 110-150 miles per hour range, and damaged several large buildings in the city's downtown.Images like these from the Geostationary Operational Environmental Satellites (GOES) help meteorologists track violent storms. Sensor: GOES/GOES. Data Start Date: 8/11/99.
Keywords: What -- Environmental Satellite; Where -- Salt Lake City; Where -- Utah
Downloads: 144
[movies]Animation of Sequoia Forest Fire - Image and Animation by Robert Simmon and Marit-Jentoft Nilsen, NASA GSFC, based on data from NOAA.
Continued hot, dry weather in the American west contributed to the spread of numerous fires over the weekend of July 29–30, 2000. This is the most active fire season in the United States since 1988, when large portions of Yellowstone National Park burned.One of the largest fires currently burning has consumed more than 63,000 acres in Sequoia National Forest. This NOAA Geostationary Operational Environmental Satellite (GOES) image shows the fire on the afternoon of July 30, 2000...
Keywords: What -- Environmental Satellite; Where -- United States of America
Downloads: 141
[movies]Irrigation in the Heart of the Sahara - Images and animation by Robert Simmon, based on data aqcuired by the Landsat data is archived and distributed by the
Although it is now the largest desert on Earth, during the last ice age the Sahara was a savannah with a climate similar to that of present-day Kenya and Tanzania. The annual rainfall was much greater than it is now, creating many rivers and lakes that are now hidden under shifting sands or exposed as barren salt flats. Over several hundred thousand years the rains also filled a series of vast underground aquifers...
Keywords: What -- Earth; What -- Landsat 7; Where -- Kenya; Where -- Tanzania; Where -- Egypt; Where -- Sudan; Where -- Libya; Where -- Chad; Where -- Tunisia; Where -- Morocco; Where -- Algeria; Where -- United States of America
Downloads: 134
[image]Alexandria, Egypt - Astronaut photograph was taken July 27, 2003, with a Kodak DCS760 digital camera equipped with an 800-mm lens, and is provided by the Earth Observations Laboratory, Johnson Space Center. The supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC
Founded by Alexander the Great in 331 BC on the Mediterranean coast of Egypt, Alexandria became a center of trade and learning in the ancient world. Alexander built the causeway between the Eastern and Western Harbors, joining Pharos Island (arrow) to the mainland. Alexandria’s cultural status was symbolized by the lighthouse on Pharos, one of the “Seven Wonders of the World.” The causeway is still known as the old part of the modern city...
Keywords: What -- International Space Station (ISS); Where -- Egypt
Downloads: 132
[movies]Global Wind Speed - Animation courtesy
Global maps of average wind speed help researchers determine where to develop wind energy. Wind turbines (high-tech windmills) can generate power in places far from power plants and without an electricity grid—but planners need to know where there is sufficient wind for the turbines to operate efficiently. A team at NASA’s Langley Research Center developed these maps, and maps of solar insolation, and provide them free of charge...
Keywords: Where -- Langley Research Center (LaRC)
Downloads: 131
[movies]Solar Flare Aimed at Earth - Image courtesy SOHO Extreme ultaviolet Imaging Telescope, ESA/NASA
At the height of the solar cycle, the Sun is finally displaying some fireworks. This image from the Solar and Heliospheric Observatory (SOHO) shows a large solar flare from June 6, 2000 at 1424 Universal Time (10:24 AM Eastern Daylight Savings Time). Associated with the flare was a coronal mass ejection that sent a wave of fast moving charged particles straight towards Earth. (The image was acquired by the Extreme ultaviolet Imaging Telescope (EIT), one of 12 instruments aboard SOHO)Solar activi...
Keywords: What -- Sun; What -- SOHO; What -- FAST; What -- Earth
Downloads: 128
[movies]ASTER Images Tokyo - NASA GSFC, MITI, ERSDAC, JAROS, and U.S./Japan ASTER Science Team
This image of the city of Tokyo was acquired on March 22, 2000 by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER will image the earth for the next 6 years to map and monitor the changing surface of our planet.This false color infrared image covers an area 60 km wide and 75 km ...
Keywords: What -- Advanced Spaceborne Thermal Emission and Reflection Radiometer; What -- ASTER; What -- Terra; What -- Earth; What -- STEREO; Where -- Tokyo; Where -- Jet Propulsion Laboratory (JPL); Where -- California
Downloads: 127
[image]Elevation Map of Kathmandu, Nepal - Image courtesy
<font size="-2" face="helvetica, arial, sans">large images: Elevation (1.2 MB) Radar Amplitude (640 K)</font>These Shuttle Radar Topgraphy Mission (SRTM) images show the basin of Kathmandu, the capital of Nepal:On the left a detail (27 km x 20.5 km) of the X-SAR digital elevation model (shown below), on the right the corresponding radar amplitude image. The amplitude is a measure of the backscattering of the transmitted microwaves...
Keywords: What -- SRTM; What -- Space Shuttle Orbiter; Where -- Kathmandu; Where -- Nepal
Downloads: 126
[movies]Mount St. Helens Flyover - Image and animation courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.
This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Mt. St. Helens volcano in Washington State was acquired on August 8, 2000 and covers an area of 37 by 51 km. Mount Saint Helens, a volcano in the Cascade Range of southwestern Washington that had been dormant since 1857, began to show signs of renewed activity in early 1980. On 18 May 1980, it erupted with such violence that the top of the mountain was blown off, spewing a cloud of ash and gases that rose to an ...
Keywords: What -- Advanced Spaceborne Thermal Emission and Reflection Radiometer; What -- ASTER; What -- STEREO B; Where -- Washington
Downloads: 126
[movies]Lightning Strike Patterns Over Oklahoma - Animation by Robert Simmon, courtesy of the Global Hydrology and Climate Center
In this animation, lightning flashes -- recorded during the NASA Lightning Imaging Sensor's pass over storms moving through Oklahoma in October 1998 -- are overlaid on high-resolution infrared cloud-top data from the orbiting Tropical Rainfall Measuring Mission (TRMM) satellite. High flash rates visible in the heaviest storm areas may indicate the potential for tornado formation. With an optical sensor locked into geostationary orbit over the Earth, such useful information would be available con...
Keywords: What -- Tropical Rainfall Measuring Mission (TRMM); What -- Earth; Where -- Oklahoma
Downloads: 125
[movies]Oklahoma Tornadoes - Robert Simmon, Goddard DAAC
Tornadoes in Oklahoma and Kansas on May 3, 1999, killed at least 40 people and caused over 500 million dollars in damages. One of the tornadoes was an F-5, the largest and most powerful classification. Although no direct measurement of windspeed is possible in such powerful storms, winds in an F-5 tornado are capable of topping 300 miles per hour.The GOES-East weather satellite produces images of most of the United States every 30 minutes in visible and infra-red wavelengths...
Keywords: Where -- Oklahoma; Where -- Kansas; Where -- United States of America
Downloads: 123
[movies]Mt. Fuji Flyby Animation - ASTER Instrument Team, ASTER Project ,
A flyby around Mt Fuji volcano, Japan was created completely from ASTER data, It shows how ASTER's stereo imaging capability will allow us to produce detailed elevation data. Topography is one of the most important and basic characteristics of the land. By combining the elevation with image data, we can visualize the 3-dimensional properties of the landscape. Over the lifetime of the mission we plan to acquire stereo data for the entire land surface of Earth...
Keywords: What -- ASTER; What -- STEREO; What -- Earth; Where -- Japan
Downloads: 122
[movies]Zoom in on Los Angeles, California - Animation courtesy NASA GSFC Scientific Visualization Studio, based on data from MODIS, Landsat 7, and Space Imaging’s IKONOS. Still image copyright Inc.
Satellite remote sensors view the Earth at many scales of space, ranging from global through continental, regional, and local—even observing details as small as one meter (three feet) across. These data enable scientists to study a wide range of phenomena that occur over these same scales of space, such as El Niño, droughts, storms, and flash floods.The above image shows the Hollywood sign above Los Angeles, California...
Keywords: What -- Earth; What -- Landsat 7; Where -- Los Angeles; Where -- California
Downloads: 122
[image]Banff National Park, Canada - NASA image created by Jesse Allen, Earth Observatory, using data provided courtesy of the University of Maryland’s
Covering 6,641 square kilometers (2,564 square miles), Banff National Park lies on the eastern slope of the Rocky Mountains in Alberta, Canada. Banff was the first national park declared in Canada, and the third national park in the world. The park’s origin lies in an accidental discovery of a cave containing hot springs in 1883. The park began as a 26-square-kilometer hot springs preserve.The Enhanced Thematic Mapper Plus (ETM+) instrument on NASA’s Landsat satellite captured this true-colo...
Keywords: What -- Discovery; What -- Landsat; Where -- Canada
Downloads: 119
[movies]First Global Carbon Monoxide (Air Pollution) Measurements - Images and animation courtesy NASA GSFC .)
NASA's Terra spacecraft has assembled the most complete view ever of the world's air pollution travelling through the atmosphere, across continents and oceans. For the first time, policymakers and scientists now have a way to identify the major sources of air pollution and to closely track where the pollution goes, anywhere on Earth. The false colors in these images represent levels of carbon monoxide in the lower atmosphere, ranging from about 390 parts per billion (dark brown pixels), to 220 p...
Keywords: What -- Earth; What -- Terra; Where -- Toronto
Downloads: 119
[movies]Irrigation in the Heart of the Sahara - Images and animation by Robert Simmon, based on data aqcuired by the Landsat data is archived and distributed by the
Although it is now the largest desert on Earth, during the last ice age the Sahara was a savannah with a climate similar to that of present-day Kenya and Tanzania. The annual rainfall was much greater than it is now, creating many rivers and lakes that are now hidden under shifting sands or exposed as barren salt flats. Over several hundred thousand years the rains also filled a series of vast underground aquifers...
Keywords: What -- Earth; What -- Landsat 7; Where -- Kenya; Where -- Tanzania; Where -- Egypt; Where -- Sudan; Where -- Libya; Where -- Chad; Where -- Tunisia; Where -- Morocco; Where -- Algeria; Where -- United States of America
Downloads: 113
[movies]Vanishing Marshes of Mesopotamia - Images courtesy Hassan Partow, UNEP; animation by Lori Perkins, NASA GSFC Science Visualization Studio, based on data from the and the
Landsat satellite imagery reveals that in the last 10 years, wetlands that once covered as much as 20,000 square km (7,725 square miles) in parts of Iraq and Iran have been reduced to about 15 percent of their original size. Through the damming and siphoning off of waters from the Tigris and Euphrates Rivers, the ecosystem has been decimated and, as a result, a number of plant and animal species face possible extinction.The top image is a false-color composite made from data collected by the Mul...
Keywords: What -- Landsat 5; What -- Landsat 7; What -- Earth; Where -- Iraq; Where -- Iran; Where -- Persian Gulf; Where -- New Jersey; Where -- Jersey; Where -- Bahamas
Downloads: 109
[movies]Mixing Waters and Moving Ships off the North Carolina Coast - Image courtesy NASA/GSFC/LaRC/JPL,
The estuarine and marine environments of the United States’ eastern seaboard provide the setting for a variety of natural and human activities associated with the flow of water. This set of Multi-angle Imaging SpectroRadiometer images from October 11, 2000 captures the intricate system of barrier islands, wetlands, and estuaries comprising the coastal environments of North Carolina and southern Virginia...
Keywords: What -- Sun; Where -- United States of America; Where -- North Carolina; Where -- Virginia; Where -- Atlantic Ocean; Where -- Chesapeake Bay
Downloads: 108
[movies]First Global Carbon Monoxide (Air Pollution) Measurements - Images and animation courtesy NASA GSFC based on data from MOPITT ( and .)
NASA's Terra spacecraft has assembled the most complete view ever of the world's air pollution travelling through the atmosphere, across continents and oceans. For the first time, policymakers and scientists now have a way to identify the major sources of air pollution and to closely track where the pollution goes, anywhere on Earth. The false colors in these images represent levels of carbon monoxide in the lower atmosphere, ranging from about 390 parts per billion (dark brown pixels), to 220 p...
Keywords: What -- Earth; What -- Terra; Where -- Toronto
Downloads: 108
[image]3D View of the Himalaya - Image courtesy NASA/GSFC/JPL,
High resolution true-color image High resolution anaglyphThe Tibetan Plateau and a portion of the Himalayan Mountain chain are captured in this Multi-angle Imaging Spectroradiometer (MISR) true-color and stereo images from May 14, 2000. The upper image is composed of red, green, and blue data from MISR's vertical (nadir) camera. The lower image is a composite of data from the instrument's vertical and 46-degree forward cameras...
Keywords: What -- MISR; What -- STEREO; What -- Earth; What -- Sun; Where -- Nepal
Downloads: 106
[movies]Lightning Strike Patterns Over Oklahoma - Animation by Robert Simmon, courtesy of the Global Hydrology and Climate Center
In this animation, lightning flashes -- recorded during the NASA Lightning Imaging Sensor's pass over storms moving through Oklahoma in October 1998 -- are overlaid on high-resolution infrared cloud-top data from the orbiting Tropical Rainfall Measuring Mission (TRMM) satellite. High flash rates visible in the heaviest storm areas may indicate the potential for tornado formation. With an optical sensor locked into geostationary orbit over the Earth, such useful information would be available con...
Keywords: What -- Tropical Rainfall Measuring Mission (TRMM); What -- Earth; Where -- Oklahoma
Downloads: 104
[image]Istanbul - Image courtesy science team.
This April 7, 2000 image of Istanbul, Turkey shows a 21 by 24 km Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sub-scene in the visible and infrared channels. Vegetation appears red, and urban areas blue-green. Bustling Istanbul, with its magnificent historical heritage, has spanned the divide between Europe and Asia for more than 2,500 years. Originally called Byzantium, the city was founded in the 7th century BC on the Golden Horn, an arm of the narrow Bosporus Strait,...
Keywords: What -- Advanced Spaceborne Thermal Emission and Reflection Radiometer; What -- ASTER; Where -- Istanbul; Where -- Turkey; Where -- Black Sea; Where -- Ankara
Downloads: 103
[movies]Mount St. Helens Flyover - Image and animation courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.
This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Mt. St. Helens volcano in Washington State was acquired on August 8, 2000 and covers an area of 37 by 51 km. Mount Saint Helens, a volcano in the Cascade Range of southwestern Washington that had been dormant since 1857, began to show signs of renewed activity in early 1980. On 18 May 1980, it erupted with such violence that the top of the mountain was blown off, spewing a cloud of ash and gases that rose to an ...
Keywords: What -- ASTER; What -- STEREO B; Where -- Washington
Downloads: 103
[image]The Keeling Curve - NASA graph by Robert Simmon, based on data provided by the NOAA
Pioneering climate scientist Charles David Keeling died Monday, June 20, 2005. Keeling was best known for his precise measurements of atmospheric carbon dioxide, charted above in the Keeling curve, one of the most recognizable images in modern science.The measurements show the steady rise of carbon dioxide levels in the atmosphere over a forty-seven-year period (1958-2005). Regular wobbles reflect the inhalation and exhalation of the Earth as plants grow, absorbing carbon in the summer and sprin...
Keywords: What -- Earth; Where -- United States of America
Downloads: 103
[movies]Solar Flare Aimed at Earth - Courtesy of SOHO/LASCO, SOHO/EIT, and SOHO/MDI consortium. SOHO is a project of international cooperation between ESA and NASA.
At 10:40 UTC on September 24, 2001, a large solar flare erupted from the surface of the sun. Pointed almost directly towards the Earth, the flare caused a coronal mass ejection (CME). Coronal mass ejections are composed of fast-moving clouds of ionized gas. These energetic particles can interfere with wireless communications, damage satellites, disrupt the transmission of electricity, and energize the Earth’s upper atmosphere, causing auroras.The images above show several views of the solar fl...
Keywords: What -- Sun; What -- Earth; What -- FAST; What -- SOHO; What -- Extreme Ultraviolet Imaging Telescope
Downloads: 101
[image]New Orleans - NASA image courtesy Lawrence Ong, EO-1 Mission Science Office, NASA GSFC
Although the breaches in the levees that allowed water to flow into New Orleans have been sealed, the city is still buried under a deep blue blanket of water. The water has been standing over the city for more than a week, after it began pouring in on August 29, 2005, when Hurricane Katrina battered the levees along the canals that run through the city from Lake Pontchartrain. The Advanced Land Imager on NASA’s EO-1 satellite acquired this detailed image of the flooded city on September 6, 200...
Keywords: What -- Imager; What -- EO 1; Where -- Mississippi
Downloads: 100
[movies]Hurricane Bret - Robert Simmon, Goddard DAAC
Hurricane Bret, the first of the 1999 season, crashed into the Gulf Coast of Texas late in the evening of August 22nd. At its strongest a category 4 hurricane (with winds over 135 mph), it quickly weakened once it moved over land. The large amounts of rain the storm delivered--as much as 25 inches--caused flooding in South Texas. Sensor: GOES/GOES. Data Start Date: 8/22/99. Data End Date: 8/22/99.
Keywords: Where -- Texas
Downloads: 97
[image]Istanbul, Turkey: The Crossroads of Europe and Asia - Astronaut photograph was taken April 16, 2004, with a Kodak DCS760 digital camera equipped with an 200-mm lens, and is provided by the Earth Observations Laboratory, Johnson Space Center. The supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC
This metropolis of 15 million people occupies both sides of the entrance to the narrow, 20-mile long Bosporus Strait connecting the Mediterranean and Sea of Marmara (south) to the Black Sea (north). From its founding as Byzantium by the Greeks in 600 B.C., this strategically located city has been a focus of maritime trade and commerce as well as an outpost and threshold for cultural exchange and conflict between Europe and Asia...
Keywords: What -- International Space Station (ISS); Where -- Black Sea; Where -- Istanbul; Where -- Turkey
Downloads: 96
[movies]Recession of the Jorge Montt Glacier, Patagonia - Images and animation by Vince Realmuto, based on research by Eric Rignot, NASA Jet Propulsion Lab
A new study of the Patagonia Icefields in South America by NASA and Chile’s Centro de Estudios Cientificos concludes the icefields—the largest non-Antarctic ice masses in the Southern Hemisphere—are thinning at an accelerating pace, faster than other areas on the planet. The runoff from these melting icefields is contributing to an ongoing rise in global sea level. (Click to read the NASA press release.)Conventional topographic data from the 1970s and 1990s were compared with data from NAS...
Keywords: What -- Shuttle Radar Topography Mission; What -- CONTOUR; What -- Landsat; What -- SRTM; Where -- The Valley; Where -- Pacific Ocean
Downloads: 94
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